//package com.hey.controller;
//
//import org.springframework.web.bind.annotation.GetMapping;
//import org.springframework.web.bind.annotation.RestController;
//import reactor.core.publisher.Mono;
//
//@RestController
//public class HelloController {
//
//    @GetMapping("/hello")
//    public Mono<String> hello() {
//        return Mono.just("Welcome to reactive world ~");
//    }
//}
